Daily real-time nowcasts (current conditions) and 2-day forecasts of environmental conditions in the Chesapeake Bay have been continuously available for 4 years. The forecasts use a 3-D hydrodynamic-biogeochemical model with 1–2 km resolution and 3-D output every 6 h that includes salinity, water temperature, pH, aragonite saturation state, alkalinity, dissolved oxygen, and hypoxic volume. Visualizations of the forecasts are available through a local institutional website (www.vims.edu/hypoxia) and the MARACOOS Oceans Map portal (https://oceansmap.maracoos.org/chesapeake-bay/). Modifications to real-time graphics on the local website are routinely made based on stakeholder input and are formatted for use on a mobile device. Continuous model input files were developed from daily real-time forecast input files, for hindcast simulations and efficient evaluation and improvement of the real-time model. This manuscript describes the setup of the environmental forecasting system, how the model accuracy has been improved, and the revision of online graphics based on stakeholder feedback.

切萨皮克湾的每日实时临近预报（当前状况）和2天的环境状况预测已经连续4年可用。预报使用分辨率为1-2 km的3-D流体动力学-生物地球化学模型，每6小时3-D输出，包括盐度，水温，pH，文石饱和状态，碱度，溶解氧和低氧量。可通过本地机构网站（www.vims.edu/hypoxia）和MARACOOS海洋地图门户（https://oceansmap.maracoos.org/chesapeake-bay/）获得有关预测的可视化信息。通常会根据涉众的输入对本地网站上的实时图形进行修改，并对其进行格式化以供在移动设备上使用。连续模型输入文件是根据每日实时预测输入文件开发的，用于后播模拟以及实时模型的有效评估和改进。该手稿描述了环境预测系统的设置，如何提高模型的准确性以及基于利益相关者反馈的在线图形修订。